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Briggs-Fan, Small Engine Technician
Category: Small Engine
Satisfied Customers: 1257
Experience:  over 15 years experience in small engine repair, multiple certifications
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Toro 190cc Briggs and Stratton engine. Runs 15-20 mins then

Customer Question

Toro 190cc Briggs and Stratton engine. Runs 15-20 mins then sputters and stalls. Wait a minute or two and starts for 5 mins or so. This repeats. New gas, removed carb and cleaned, removed gas tank and cleaned, new ignition coil, new air filter, new spark plug, loosened and then replaced gas cap. Seems to want to recover if I tilt mower backwards as it sputters. Don't see a fuel filter. Not sure what else to check. Seems like a fuel starvation issue
Submitted: 6 months ago.
Category: Small Engine
Expert:  Briggs-Fan replied 6 months ago.

Hi my name is ***** ***** welcome to Just Answer. Does it have to sit andcool down before running 15 to 20 min again ?

Customer: replied 6 months ago.
No. can start in one to two minutes. Then might run 5 or 10 more minutes. Sputters and dies
Expert:  Briggs-Fan replied 6 months ago.
Where do you store the mower ? , how did you clean the carburetor?
Customer: replied 6 months ago.
In outside she'd. Use gas stabilizer all the time. Took carb apart a cleaned. Also made sure there were no blockages. Followed several YouTube videos
Expert:  Briggs-Fan replied 6 months ago.

Did you use a carburetor cleaner like gumout ? . Have you removed the gas cap ?

Customer: replied 6 months ago.
Neither helped
Expert:  Briggs-Fan replied 6 months ago.

If you tilt the mower backwards when it starts to stall will it clear up ?

Customer: replied 6 months ago.
That seems to help. I also get a slight ticking noise when it sputters. Not sure if it is a cylinder knock though
Expert:  Briggs-Fan replied 6 months ago.

Have you run a dry gas in the tank or a water remover ? .

Customer: replied 6 months ago.
Expert:  Briggs-Fan replied 6 months ago.

Because tilting it back helps it run better whichales me wonder if it has water in the tank , water is heavier than gas so once it sits in the bowl it will roll around in there . Can you try this ? . Start the mower on flat ground , run it till it sputters and dies then loosed the carburetor bowl bolt and let some fuel drain , then retighten and see if it will start and run for a longer period of time

Customer: replied 6 months ago.
I can try but I have always used dry gas. I have taken off the tank and cleaned. Replaced gas twice this year (and added dry gas). This actually started last year and had gotten progressively worse this past season. So it has not just started. I cleaned tank and replaced gas last year too
Expert:  Briggs-Fan replied 6 months ago.
It's just odd how tilting it helps
Customer: replied 6 months ago.
Haven't tried yet but wanted to tell you that the mower always starts within a minute or so. Then runs 5,10 more minutes. I know there was no water in gas. Use same gas in other mower.
Expert:  Briggs-Fan replied 6 months ago.

Well the next thing is check the compression and spark right after it dies , a engine needs spark , fuel and compression to rUn , so your losing one of them

Customer: replied 6 months ago.
How do you suggest I check compression
Expert:  Briggs-Fan replied 6 months ago.

You will need a compression tester , you may be able to rent one from a auto parts place